Wireless deactivates during PC playing

[jedite1000]

Hi i have a major problem and i dont know what it is or how to fix it

Whenever my main PC is turned on, i get no signal from the wireless, like i cannot use my phone or laptop on the internet

i use an ethernet cable which is direclty connected to my main PC

my windows is also window XP and my modem model is TG782T

only if my pc is turned off the wireless works

 

[jedite1000]

no one, really?

 

[jedite1000]

..useless forums